T4X MDC USB Pinout?

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defor · #1 Post by **defor** » Sat Mar 15, 2008 4:18 pm

I'm curious about adding an alternate internal usb device to my T42p, replacing the MDC board, and using the usb signal off it.

Anyone had the pinout of this modified MDC board?

yak · #2 Post by **yak** » Sat Mar 15, 2008 4:33 pm

Hmm, nice idea and a good question. Unfortunately I can't answer but I would also be curious to know it.

Using a multimeter to find it out could be a problem since the D+/D- signals most probably go directly to the chipset (even the external USBs are connected directly).

#3 Post by **rkawakami** » Sat Mar 15, 2008 8:21 pm

Does this help?

http://www.intel.com/design/mobile/archives/pdf/mdc.pdf

edit: In case you're curious how I found this... Google: "modem daughter card pinout"; it was the first link. Total time to find it: 1 minute (most of that was trying to figure out what MDC meant).

yak · #4 Post by **yak** » Sun Mar 16, 2008 8:00 am

rkawakami wrote:Does this help?

Thanks but unfortunately not much. The ThinkPad CDC connector is a 40 pin connector, this Intel one you've found has 30. This is understandable as the one you've found is a modem connector whereas ThinkPad one also supports PCI and USB devices.

The ThinkPad CDC connector can be seen on these system board scans.

defor · #5 Post by **defor** » Sun Mar 16, 2008 10:03 pm

yeah.. my mistake.. it's CDC, a mdc variant with at the very least usb added to the standard.. I guess I might do a little tracing on some spare modules i have around to see what i can find

dakrk · #6 Post by **dakrk** » Thu May 22, 2008 7:45 am

Have you found something ?
Google seems to know nothing relevant.

T4X MDC USB Pinout?

T4X MDC USB Pinout?

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